How many movies have Ken'ichi Endô and Yumeaki Hirayama collaborated on?

They have worked on 1 movie together! Their first movie together was "Chô" Kowai Hanashi THE MOVIE / Yami no Eiga-sai (2005) and was their highest rated movie together. They have not worked together since "Chô" Kowai Hanashi THE MOVIE / Yami no Eiga-sai (2005).